Abstract
Chemical studies of the CH2Cl2-MeOH extract of the seeds of Gambeya africana (Baker) Pierre led to the isolation of 15 compounds. Their structures were established on the basis of spectroscopic methods and chemical reactions. They comprised five new fatty acid esters of erythrodiol, [3β-octacosanoyloxy-12-oleanen-28-ol, 3β-triacontanoyloxy-12-oleanen-28-ol, 3β-dotriacontanoyloxy-12-oleanen-28-ol, 3β-tetratriacontanoyloxy-12-oleanen-28-ol and 3β-hexatriacontanoyloxy-12-oleanen-28-ol], one new steroidal glycoside, [3β-O-β-xylopyranosylchondrillasterol] and nine known compounds, (3β-octadecanoyloxy-12-oleanene, 3β-eicosanoyloxy-12-oleanene, 3β-docosanoyloxy-12-oleanene, 3β-acetoxy-12-oleanene, erythrodiol, 28-hydroxy-β-amyrone, chondrillasterol , chondrillasterone and 3β-O-β-glucopyranosylchondrillasterol).
Key words
Gambeya africana
- Sapotaceae - seeds - fatty acid esters - erythrodiol - triterpenoids - chondrillasterol - steroid glycosides
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Prof. Dr. Jean Wandji
Department of Organic Chemistry
University of Yaounde-1
Faculty of Science
PO.Box 812 Yaounde
Cameroon
Email: jeanwandji@yahoo.fr
Fax: +237-223 53 86
